Remote phase real-time detection method and device

A real-time detection, long-distance technology, applied in the direction of measuring devices, phase angle between voltage and current, measuring electrical variables, etc., can solve problems such as failure to use normally, short communication distance, and susceptibility to external influences

Active Publication Date: 2015-01-28
NANJING SINDO TECH
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AI Technical Summary

Problems solved by technology

[0002] The traditional remote phase real-time detection mode uses the ASK modulation and demodulation module to realize the remote real-time transmission function of phase information, but because wireless communication is more and more widely used, especially the most commonly used 315MHz and 433MHz frequency point modules on the market, the traditional direct modulation ASK Although the communication module is simple and easy to use,...

Method used

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  • Remote phase real-time detection method and device

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Embodiment 1

[0034] The remote phase real-time detection device in this embodiment includes a transmitting end and a receiving end, and the transmitting end is mainly composed of a contact electrode, a protection circuit, a filter circuit, a zero-crossing comparison circuit, an MCU controller, an X / Y wireless transmitting unit, and an indicating unit , half-wave rectification trigger circuit, charging unit circuit, and power management unit; the receiving end is mainly composed of X wireless receiving unit, Y wireless receiving unit, and MCU control unit.

[0035]When the transmitter is close to or mounted on the 220V-500kV grid line, the contact electrode of the transmitter will sense a certain intensity of the induction signal, and after passing through the protection circuit, when the transmitter is not turned on, the filter circuit will not work, and the signal will pass through the circuit composed of resistors and diodes. Half-wave rectification, converted to DC flow, filtered by a ca...

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Abstract

The invention relates to a remote phase real-time detection method and device. Principally, a difference value between a rising edge of an X analog signal and a rising edge of a Y analog signal is detected, and a phase difference relation is derived according to the formula that phixy=360*(t1y^-t1x^)*fx, wherein fx represents induction signal frequency, and t1y^-t1x^ represents a time difference between the X analog signal and the Y analog signal. The remote phase real-time detection method and device solve the problems that because wireless communication is applied more and more popularly, particularly, the most commonly used 315 MHz and 433 MHz frequency point modules on the market and traditional direct modulation ASK communication modules are simple and easy to use but are increasingly influenced by the environment, and consequently data in use processes are instable and are prone to be influenced by the outside world; meanwhile, because frequency point adjustment of the modules is unchangeable, particularly, when multiple phasing tester systems are located at the same site, the phasing tester systems interfere with one another and cannot be normally used, and communication distances are short.

Description

technical field [0001] The invention relates to the field of electrical test equipment, in particular to a method for long-distance phase detection and a phase nuclear instrument device. Background technique [0002] The traditional remote phase real-time detection mode uses the ASK modulation and demodulation module to realize the remote real-time transmission function of phase information, but because wireless communication is more and more widely used, especially the most commonly used 315MHz and 433MHz frequency point modules on the market, the traditional direct modulation ASK Although the communication module is simple and easy to use, it is more and more affected by the environment, which leads to unstable data in use and is easily affected by the outside world. At the same time, because the frequency point adjustment of the module remains unchanged, it is especially suitable for multi-set nuclear phase instrument systems. There are many problems such as mutual interf...

Claims

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Application Information

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IPC IPC(8): G01R25/00
Inventor 尚雪嵩陈燕午
Owner NANJING SINDO TECH
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